Disc snow thrower



Oct. 31, 1967 (3. H. RUBIN DISC snow THROWER 2 Sheets-Sheet 1 Filed Jan.27, 1965 INVE NTOR. GEORGE H. RUBN I ATJLQRNEY Oct. 31, 1967 G. H. RUBIN'D'ISC snow THROWEB.

Filed Jan. 27, 1965 2 Sheets-Sheet 2 INVENTOR. GEORGE H. RUBIN ATTORNEYUnited States Patent 3,349,506 DISC SNOW THROWER George H. Rubin, 624Marquette Ave., South Milwaukee, Wis. 53172 Filed Jan. 27, 1965, Ser.No. 428,364 1 Claim. (Cl. 37-4-3) ABSTRACT OF THE DISCLOSURE A partiallyenclosed casing or housing which serves as a frame for mounting wheels,a power source, related control means and a rotor or blade assembly. Theblade assembly consists of a shaft journaled at each end in the housing.Rigidly mounted on the shaft is a plurality of obliquely arranged discs.The entire perimeter of each disc is formed with teeth extendingradially a uniform depth. Such teeth assist in penetration of material,such as snow, by the discs. Material penetrated is moved into thehousing through action of the oblique disc arrangement and of the flatfaces of the disc teeth. Removal from the housing is accomplished asmaterial is lifted through action of the discs and propelled bycentrifugal force through an appropriate opening in the housing.

Background of the invention (1) Field 0 the invention.This inventionpertains to general art of rotation with a movable housing of a deviceadapted to penetrate and move snow, the housing being equipped withsuitable snow outlets to deposit the snow in a predetermined relation toits original position.

(2) Description of the prior art.-The rotating ele ment of snow-throwerscustomarily serves to penetrate snow and to move the snow into thehousing. Snow is then either ejected with a separate element or by therotational force of the rotating element. Where the latter is the case,considerable effort has been put forth in developing elements whichexpose a substantial surface to the snow to 'be moved and thus exertmaximum rotational force in ejecting such snow. Obtaining greatersurface exposure has resulted in decreased penetration ability of therotating element. It is in the area of combined substantial bladesurface to move snow with a design which has a high degree ofpenetration ability, in which .applicants invention lies.

Summary of the invention The foregoing background shows that thesnow-thrower art has not, prior to applicants invention, efiectivelysolved the problem of loss of penetration ability which has previouslybeen created when the rotating element is constructed to expose maximumsurfaces to snow to be moved. The solution of this problem constitutesthe primary object of this invention.

Other objects and advantages of the invention will become apparent fromthe following description and accompanying drawings in which:

FIGURE 1 is a perspective view of the first embodiment of the machineshowing the blade assembly through the discharge opening.

FIGURE 2 is a side view of a single disc from the blade assembly of saidfirst embodiment.

FIGURE 3 is an enlarged side view of one of the teeth which arepositioned around the periphery of each of the discs in the bladeassembly of said first embodiment.

FIGURE 4 is an end view of a single disc of the blade assembly takenalong the lines 44 of FIGURE 2.

FIGURE 5 is a side view of the blade assembly of the first embodimentremoved from the snow thrower.

FIGURE 6 is a side view of the blade assembly in the second embodimentof the invention showing the blade assembly through the snow intakeopening.

FIGURE 7 is a side view of the blade assembly of the second embodimentof the invention removed from the machine.

FIGURE 8 is a side view of a major portion of a disc from the bladeassembly of the third embodiment of the invention.

FIGURE 9 is an end view of a section of the disc shown in FIGURE -8taken along the lines 9-9 of said FIG- URE 8.

Referring now to the drawings, wherein similar reference charactersrepresent corresponding parts throughout, it will be seen that in FIGURE1, casing 1 serves as the main frame of the machine on which are mountedaxles 2 and 3 having ground engaging wheels 5 and 4 respectively. Powersource '6 is mounted on said casing from which power is transmitted toshaft 7 by drive chain 8 and to blade assembly shaft 9 by drive chain 10(see FIG- URE 6).

On blade assembly shaft 9 are mounted a series of discs 11, said discson one half of said shaft being arranged at a uniform angle relative tosaid shaft and on the other half of said shaft at a uniform anglecomplementary to the first said angle.

Chute 12 is associated with casing 1 to deflect snow from discs 11.Teeth 13 on such discs 11 are designed to produce a high degree ofpenetration of said discs into snow.

As blade assembly shaft 9 is rotated, discs 11 are rotated therewith andas snow is penetrated by the discs it is moved upward and to the rearthrough opening 14 in casing 1 and against chute 12. Chute 12 thendeflects the snow to a desired location at the side of the machine.

In the second embodiment of the invention, all of the features of theinvention are identical to those in the first embodiment except thatdiscs 11 are arranged at a uniform angle to shaft 15 throughout theentire length of said shaft. This results in causing the snow which ismoved to travel in a single direction relative to said shaft 15.

In the third embodiment of the invention all features are identical withthe first embodiment except that one side of disc 11 is provided with aseries of reinforcing lugs 16 which extend radially from the disc bodyonto each tooth 13 to provide reinforcing for said tooth and to assistin the penetration and movement of snow. In addition, each tooth 13 isformed in disc 11 by cutting along the curved side of said tooth andbending the adjacent material along a radial line passing through thepoint of deepest penetration of said cut, whereas the corresponding cutis along the radial line in embodiments one and two and the bending ofadjacent material in said embodiment is along the curved side of thetooth.

It is to be understood that various changes as to the size, shape andarrangement of parts may be resorted to without departing from thespirit of the invention or the scope of the subjoined claim.

Having thus described my invention, I claim:

In a snow thrower including a casing, a source of power associatedtherewith, a snow intake opening and a snow discharge opening in saidcasing, and a rotating assembly comprising a multiplicity of spaceddiscs arranged at an acute angle on a shaft within said casing andoperably connected with said power source, each disc being circular andhaving a multiplicity of cuts extending from the circumference each withthat portion of the disc adjacent a side of said cut positioned atsubstantially ninety degrees with the face of said disc.

References Cited UNITED STATES PATENTS 5/1966 Rubin 3743 12/1952 Lamy3743 FOREIGN PATENTS 818,810 10/1951 Germany.

0 ABRAHAM G. STONE, Primazy Examiner.

R. L. HOLLISTER, Assistant Examiner.

